Base for rayon pumps and the like



July 9, 1946. J LAlRD 2,403,663

BASE FOR RAYON PUMPS AND THE LIKE Filed May 15, 1945 2 Sheets-Sheet 1 Z T .Z. .44

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6 a y 7 [ii W mm July 9, 1946. J; P LMRD 2,403,663

BASE FOR RAYON PUMPS AND THE LIKE Filed May 15, 1945 2 Sheets-Sheet 2 Jb e i azllaz'rd I Patented July 9, 1946 1 A v I Joseph. Paul Laird, Philadelphia, Pa., assignor to I The Wlcaco Machine Corporation, Philadelphia, Pa., a corporation of Pennsylvania Application May 15, 1945, Serial No. 593,934

5 Claims. (o1, ins-r18) My invention relates to new and useful improvements in bases for rayon pumps and has for an object to provide a base that will increase the efllciency of the rayon pump.- 7

' It is well known to those skilled in the art that rayon pumps ar made with great accuracy and necessarily so as the acetate, viscose or cupra-. ammonium etc., must be carefully meterized. also there must be an absence of pulsation or the denier of the thread will be affected. However, if the cast iron bases ofthe pumps (which are separate entities) are clamped to th main supply lines happen to have even small blow holes extending therethrough, the eiilciency of the metering of the pumps will be adversely affected.

Furthermore, the viscose and acetate in travelling through these cast iron bases to the pump, have a tendency to rust the base and the accumulated rust will affect the quality of the rayon.

One.,.of the objects of the present invention, therefore, is to provide a castiron base for the rayon pump in which are inserted preferably stainless steel plugs or inserts through which the fluids will pass to thus both overcome the'possibllity of any accumulating rust in the passageways of the base and to furthermore provide against any blow holes that might otherwise extend from the passageways of the base to the up per surface and thus affect the meterizing of the Dumps.

Still another object of the invention is toutilize a relatively cheap cast iron base and wherever there is a passageway in the base, to provide a stainless steel core or plug or insert, so that the viscose or acetate never comes in contact with the cast iron of the base, contacting only the walls of this stainless steel insert or inserts,

With these and other objects in view, the invert-- tion consists in certain and novel arrangements and combination of parts that will be hereinafter more -fully described and pointed out in the claims. l

Referring now to the drawings showing a prelerred form of base andtwo modified forms:

Fig. lfis a view in elevation of my improved base, parts of the uprights being shown in section; i

- Fig. 2 is a sectoinal view taken on line 2-1 of Fig. 3 is a fragmentary top plan view of one of the uprights;

Fig. 4 is a view partly in elevation and partly in section of a modified form of base showing a cutoff valve; and

Fig. 5 is a sectional view'of a still further modifled-form of base inwhich been dispensed with. f Referring now for the moment to Fig. 1, there is shown the main supply pipe I for the acetate, viscose or other material from which therayon is to be made. Clamped to this supply plpel may be seen the base 2 which in this instance includes the two legs, the inlet leg 8 and the outlet leg 4, the body portion I which is semicircular onits bottom as at i to snugly rest on and hug the inlet pipe I.

As also may be seen in Figs. land 2, bosses 6.: are provided on the opposite ends of the body portion in which the bolts 1 are threaded so that the clamp bars I may be pulled up tightly against the supply pipe to provide atight fit and anchor said base in position. I

Glancing now at Fig. 2 and at the inlet upright I, it will be seen that the same is provided with a, bore I extending through its entire length and in this bore is driven under sreat'pressure, a

stainless steel plug or insert ill. 'After this inbeing offset as may be seen in Fig. 250 that the flow of liquid may be regulated by the valve stem ll which registers with the lower end of the passageway II and the upper end of the passageway ll.

The valve stem i4 is supported in the boss l5 and'the valve gland nut I8. At the inner end of the gland'nut is the washer lI that-may be of buns. rubber or asbestos and in front of this will be the small stainless steel washer-or insert is.

g The threaded valve stem It will also be of stainless steel so that as the acetate or viscose passes up from the supply pipe i through the passageways It and I3 and out of'theoutlet l9 connected with the passageway [3, it has not come in.

contact with any of the cast iron metal of the base. On the other hand, it has come in contact with only the passageways formed in the stainless steel, thus avoiding any possibility of contaminating the acetate 'with any foreign substance such as rust which heretofore has been the case when the liquid simply'passed through the cast iron base.

At the top of the the cutofi valve has upper passageway [3 there is -will be seen the stationary Efitted within the cast iron upright and sealed in also inserted the stainless steel pipe plug 20. Also it will be seen that even the valve stem that is in the path of the acetate is of stainless steel 0 there is no possibility whatever of any rust getting into the acetate.

Furthermore, it will be seen that regardless of whether the base should have blow holes therein, by forming these passageways in the stainless steel, there will be no loss of pressure and the metering of the pump will not be adversely affected.

Still glancing at the upright 3, Fig. 1, there nipple II which is the stainless steel insert III. In the outer end of this nipple will be partially supported the rayon pump (not shown) in the usual manner.

Thus, from the time the liquid passes from the base into. the pump it has travelled through passageways formed of stainless steel.

Reference is now made to the opposite or' outlet leg 4, wherein the same arrangement is carried out in" that the passageways here are all .formed in stainless steel plugs or inserts. Here the upperv portion of the leg I is drilled or cast with the bore in which is fitted under heavy pressure the stainless steel insert 28.

At right angles to the insert 26 may be seen the threaded adjustable nipple 21 which is likewise formed of stainless steel and is held in place by the* lock nut 28 in which, is secured a washer 29. To the rear of; the nipple may also be seen the stainless steel plug 21 which. extends well into the stainless steel insert 26.

Registering with the nipple is the outlet in the upper gland nut 30 that is also threaded into the stainless steel insert 26 while beneath the nut will be the washers 3|. Thus, when the acetate goes through the stainless steel nipple 21 from the pump (not shown) it will pass up through th gland nut 30 to the supply (not shownltor the spinnerettes.

Thus, it will be seen that from the time the acetate leaves the mass supply pipe I, until it passes out of the gland nut 30, that is, as far as the base is concerned, it has never come incontact with any of the cast iron of the base but only in contact with the passageway walls in .the

- stainless steel inserts and with the stainless steel valves and nipples and glands as just described.

To repeat, even if the cast iron base should have blow holes therein, they-could not in any way affect the metering of the pump and furthermore, there is no possibility of any rust accumulating and passing into the acetate to affect the quality of the rayon.

It will also be noticed that the stainless steel inserts are so arranged that the drilling or ream- .ing of the base for these inserts may. be done without presenting any machine setting-up difflculties.

Referring now to the modified form shown in Fig. 4, here againfthe stainless steel inserts are provided throughout the line of travel of the viscose or acetate. j g i It will be understood that I have only shown enough of the base There is shown the body 50 with one leg 5| and the opposite leg 52. The leg 5| is drilled and reamed to receive the steel alloy insert 53 and this insert in turn is fitted with a central passageway 54 in which there is a stainless steel valve 55 with its handle 56, there being the outlet 5! registering with the fixed nipple 58.

As will be readily appreciated if the handle .saLuminum or even to illustrate the invention.

56 is turned it will either turn on or off the suply of viscose depending on whether the port 59 opens or closes the outlet 51.

In the opposite leg 52 there will also be seen the stainless steel insert with the stainless steel nipple BI and the rear plu Bi and lock nut 62 with the upper gland nut 63; the passageway through the nipple, of course, registering with the passageway 64 registering with the gland nut 63.

' The modification shown in Fig. 5 also shows a cast iron base having the body- 15, the upright l6 and the upright 11, the upright 18 having the stainless steel plug I6 tightly and permanently fitted therein which plug is then drilled as at 18 and sealed by the plug 19, there being a passageway 80 connected therewith and leading to the fixed nipple 8|. I

The other upright 11 has the plug 82 therein and this plug is drilled to receive the outlet pipe 83 which passes through the gland nut, a washer 85 being on the inner end of the nut. Likewise, there is the nipple 56 that is drilled as at 81 and then recessed about its periphery at 88 and provided with a cross hole 89 so that the liquid may pass up into the outlet 83. Lock nuts 90 are shown for holding the nipple in place. Thus, itwill be seen that in this form or base, too, the acetate never comes in contact with the cast iron of the base but only with the metal or rustless inserts. I I

From the foregoing it will be seen that I have provided a base or bases for rayon pumps, or pumps of a similar nature, wherein cast iron may be used to support the pump and by inserting steel plugs or inserts as illustrated above and certain stainless steel parts, all the advantages of a solid stainless steel base is obtained without the p ns A Furthermore, it is a relatively simple matter to install these inserts in bases already made as well as ones to be later made.

Finally, although I have mentioned stainless steel throughout the application as the material out of which the inserts, nipples and valves should be constructed, it will be understood that other stainless metals such as stainless bronze, and

tallic iritheir hardh might be used in place of the stainless steel, as the main object, of-course,,

is to provide inserts that are stainless or rustless in their nature.

Many slight changes may be made without in any way departing from the spirit or scope of the invention.

Having thus described my inventdon what I claim is new and desire to obtain by Letters Patent is:

1. In a cast iron metal base for rayon pumps and the like, two connected uprights, relatiifely thick stainless inserts in the form of drive fit plugs in each of said uprights, stainless nozzles seated in the stainless inserts, one upright having a passageway formed in the stainless insert registering with one of said nozzles and the other of said uprights having a passageway in said stainless insert registering with the otherof said nozzles whereby fluid flowing through said inserts and nozzles contacts with only stainless walls.

2. In a cast metal base for rayon pumps and the like, a body portion and oppositely disposed uprights, one of the uprights having a central core passing completely therethrough and the other of said uprights having a bore extending partly ties. that are almostme- I therethrough, non-rustable relatively thick inserts in the form of drive fit plugs permanently secured in the said respective bores, non-rustable nipples extending towards each other from said uprights, and the said non-rustable nipples also respectively seated in the said non-rustable inserts, and the said non-rustable inserts provided with passageways respectively registering with said nipples whereby fluid passing through said passageways and nipples will contact only with the non-rustable inserts and nipples.

passageway adapted to communicate with the main supply pipe, a stainless steel nipple inserted in the insert and registering with the passageway,

' the other of said uprights having a bore passing 3. In a cast iron metal base for rayon pumps 7 and the like, a body portion and oppositely disposed uprights, one of the uprights having the central bore passing completely therethrough and the other ofsaiduprights 'havingabore extending partly therethrough, relatively thick stainless metal inserts in the form of drive fit plugs permanently secured in the respective bores,

stainless metal nozzles extending towards each other from said uprights and respectively seated in the stainless metal inserts, the stainless metal insert of the one leg having a passageway regi's tering with the nipple seated therein and the stainless metal insert in the other of said; uprights likewise having an outlet passageway registering with its nipple whereby fluid flowing through said I integral with the body portion, one ofthe uprights having a bore extending completely therethrough and a relatively thick stainless steel'insert in the form of a drive fit-plug permanently secured therein, the said steel insert havinga walls of .the passageways and l l; B0

partially therethrough and a relatively thick steel insert also in the form of a drive fit plug permanently mounted in said last mentioned bore, a

stainless steel nipple seated in said insert and said stainless steel insert also having apassageway registering with said nipple whereby fluid flowing through said passageways and nipples will contact only with the stainless steel walls of the inserts and nipples. Y

5. In a cast iron metal base for rayon pumps and the like, a body .portion adapted to be securely clamped on a supply pipe, two oppositely disposed uprights integral with the body portion, one of the uprights having a bore extending com pletely therethrough and a relatively thick stainless steel insert in the form of a drive fit plug permanently secured within said bore, the said steel'insert having a passageway adapted to communicate with the main supply line, a. stainless steel 'valve extending into said passageway, a stainless steel nipple seated in the insert and registering with the passageway, the other of said uprights having a bore passing partially there- "through and a relatively thick steel insert also in the form of a drive fit plug permanently mounted in said last mentioned bore, a stainless steel nipple also seated in said last mentioned insert and said stainless steel insert also having a passageway registering with said last mentioned nip pie whereby fluid flowing through said passage- .ways and nipples will contact only with the stainless steel walls of the insert valve, insert passageways, and nipples.

JOSEPH PAUL LAIRD. 

